In order to install laminate flooring on stairs, the backing must be peeled off which changes the height of boards that interconnect with the bull nosing boards. They don't line up level when attached at the stair and don't have a snug fit which makes gluing difficult.

The instructions suggested using the filler piece if using a thicker floor. I found it necessary when using an 8mm floor to keep the stair tread level with the floor. I was surprized by how well the tread looked after it was installed. I would do it again.

I had laminate installed on the staircase and it looks gorgeous.Was going to have carpet installed instead but glad I did'nt. the couple i am renting the home to have several children and a very large dog so it is a high traffic area. but the product still looks really good.

You will need to cut off the existing overhanging nosing on each step first.

1. Starting from the bottom of the staircase working up, cut the stair riser to match the height and width of the step.

2. Cut the flooring to length and width for each tread. An additional "filler" piece of flooring must be added to the back of the flooring. (Nail and glue for safety,)3. The Overlap Stair Nosing is then installed to cover the riser and laminate on step. (Nail and glue for safety,)4. The Steps and Risers should be attached by direct gluing to the stair using 100% urethane construction adhesive. (For safety, omit all padding).

TIP; fit and adjust each step before gluing.Thank you for your inquiry.